You don't know if that is what he meant, that's just a guess on your part.
I think the whole "beacon in this world" thing ends with the upcoming last stand of the Donnerverse on the Smallville Season Finale; Snyder & Co. are getting rid of the "big blue boyscout" and are presenting us with something new, fresh, and unpredictable!
Some people have the idea that Snyder is going to take a good, wholesome Chris Reeve like Superman (with the traditional Superman costume, no less!) and stick him in a "dark" realistic world;
I think they are going to change the character (this can be done successfully as demonstrated in the critically acclaimed Superman:Earth One graphic novel).
And again, I don't think fanboy opinion amounts to any significant WOM when it comes to the success or failure of a movie (IE. Kick Ass, Scott Pilgrim).
I mean, let's be completely honest, if in MOS, Superman ends up wearing a red and black costume with a silver 'S',
we will ***** and moan about for days, but we will still go see it and probably be first in line on opening night anyway.